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How does gravity escape a black hole?

Nothing escapes black holes, gravitons mediate gravity, so why do black holes gravitate?

My question is, "where is the hole (no pun intended!) in the above understanding?"

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marked as duplicate by Qmechanic, twistor59, John Rennie, Manishearth, David Z Dec 5 '12 at 16:39

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Relevant Note: We do not yet have a generally accepted theory of quantum gravitation. – namehere Dec 5 '12 at 15:11
@DmitryBrant Thanks, I was unable to find that question. Should I delete this one? – user12345 Dec 5 '12 at 15:11
@user16307 The link works fine for me and points to a duplicate question for which many answers were posted. I would recommend this one be removed. – twistor59 Dec 5 '12 at 15:21
Sorry, there was a misunderstanding. "I was unable to find that question"... and that's why I made this one. But, when you (kindly) showed me the other question, I realised mine was redundant and so I asked if I should delete it. – user12345 Dec 6 '12 at 0:16
up vote 2 down vote accepted

It is always virtual particles that "mediate" the interactions, not real ones. You imply real gravitons, not virtual ones; this is a hole in your reasoning.

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